/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/BaseTools/BaseMeshProcessingTool.h
virtual void AddOptionalPropertySet ( [UInteractiveToolPropertySet](API\Runtime\InteractiveToolsFramework\UInteractiveToolPropertySet) * PropSet, [TUniqueFunction](API\Runtime\Core\Templates\TUniqueFunction)< bool()> VisibilityFunc, [TUniqueFunction](API\Runtime\Core\Templates\TUniqueFunction)< void()> OnModifiedFunc, bool bChangeInvalidatesResult )